[FIX] sale_purchase: show purchase description in RfQ autogeneration

1. Install [Manufacturing], [Sales], [Purchase] on Apps (ordered)

2. [Settings]>[Manufacturing]>[Subcontracting]: set

3. [Sales]
- [CREATE] product type [Service]
- On the tab 'Purchase' add a vendor, select [Subcontract Service]
- On the same tab add `Purchase description` then save
- [Orders]>[Quotations]
- CREATE, add the subcontract service product and set customer
- CONFIRM

4. [Purchase] - [Requests for Quotation]
- should show on the top of the list if vendor was new. click
- [Description] column does not show `Purchase description`

Desired: show relevant data

Impacted versions: 15 - master

opw-3152072

closes odoo/odoo#113407

X-original-commit: fa33657e5e134a9f412a17da4082467ec847e395
Signed-off-by: Arnold Moyaux (arm) <arm@odoo.com>
Signed-off-by: Lee, Hansun (hale) <hale@odoo.com>

addons/sale_purchase/models/sale_order_line.py

@@ -177,8 +177,13 @@ class SaleOrderLine(models.Model):
         else:
             product_ctx.update({'partner_id': purchase_order.partner_id.id})
 
+        product = self.product_id.with_context(**product_ctx)
+        name = product.display_name
+        if product.description_purchase:
+            name += '\n' + product.description_purchase
+
         return {
-            'name': self.product_id.with_context(**product_ctx).display_name,
+            'name': name,
             'product_qty': purchase_qty_uom,
             'product_id': self.product_id.id,
             'product_uom': self.product_id.uom_po_id.id,

addons/sale_purchase/tests/test_sale_purchase.py

@@ -227,6 +227,9 @@ class TestSalePurchase(TestCommonSalePurchaseNoChart):
         self.assertEqual(purchase_line2.product_qty, delta, "The quantity of the new PO line is the quantity added on the Sale Line, after first PO confirmation")
 
     def test_pol_description(self):
+        """
+        test cases when product names are different from how the vendor refers to, which is allowed
+        """
         service = self.env['product.product'].create({
             'name': 'Super Product',
             'type': 'service',